diff options
| -rw-r--r-- | lib/bitmap.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/lib/bitmap.c b/lib/bitmap.c index 74bdf3601245..36e380da00c5 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -169,15 +169,14 @@ void __bitmap_shift_left(unsigned long *dst, const unsigned long *src, * word below and make them the bottom rem bits of result. */ if (rem && k > 0) - lower = src[k - 1]; + lower = src[k - 1] >> (BITS_PER_LONG - rem); else lower = 0; upper = src[k]; if (left && k == lim - 1) upper &= (1UL << left) - 1; - dst[k + off] = upper << rem; - if (rem) - dst[k + off] |= lower >> (BITS_PER_LONG - rem); + upper <<= rem; + dst[k + off] = lower | upper; if (left && k + off == lim - 1) dst[k + off] &= (1UL << left) - 1; } |